Pulley



w. 'r. HENSLEY.

PULLEY Filed Feb. 25. 1924 4 Sheets-Sheet 1 WWW Aug. 16, 1927. V

w. T. HENSLEY PULLEY 4 Sheets-Sheet 2 Filed Feb. 25. 1924 w. T. HENSLEYPULLEY Filed Feb. 2 1924 4 Sheets-Sheet 5 ,HENsLE 1 Au 16, 1927. r

W. T. HENSLEY PULLEY Filed Feb. 25. 1924 4 Sheets-Sheet 4 TIG. 11.

lvwcnl'oz WTHENSL E! Gthnmug Patented Aug. 16, 1927.

umrs'o "STAT-ES.

PATENT oF- icE.

WILLIAM 'I'. HENSLEY, OF INDIANAPOLIS, INDIANA. I

PULLEYU Application filed February 25, 1924. SeriaLNo. 695,002.

This invention relates to relatively large, laminated pulleys, that ispulleys of sufficient diameter so, that it is preferable to have I runand hub portions with an 'lntervenlng.

5 web portion. v

An object of the present invention is to provide a. pulley having abodyprovided be quickly and easily assembledto formthe.

complete pulley.

Another objectis'to provide a pulley having a body comprisingpartsadaptedto be secured together in aplane normalto the axis of the pulleyand to contain a. laminatecl rimand hub" portion.-

It. is also an object of'my invention to have the end members so formedthat they may clamp laminated huh and core members of different axialdimension between: them so that the end members may be stand" ard forpulleys of various widths of. face. With the above-an'diothe-r objectsinview,

the. invention may be said to comprise the.

structure. as illustrated in the accompanying drawings, fully set forthin the. following description and specifically described in the appendedclaims, together with such variations and modifications thereof as willbe obviousto those skilled in the art to which the invention appertains.

Reference should be had to the accom panying drawingsforming a part of.this specification, in which Figure 1 isan axial section through the.

improved pulley taken on .theline 11,

Fig. 2. v

Fig. 2 is aside elevation of the pulley.

Fig; 3 is aside elevation of one of the.

stampings,

the two identical stampings forming the body of the pulley, the sectionbeing taken on line 4+4, Fig. 3

Fig. 5 is an end elevation of the hub core. Fig. 6 is anaxial'sectionthroughthe core.

Fig. 4 is an axial section throughoneof- Fig. 7 is a perspective view ofone of h p ates e inthe orea 1 Fig. 8 is a perspective view of' oneofthe; two polygonal end plates o'fthe core which arev out from the sheetmetal stampings] formingthebody of the pulley;

ig; 9 is a sectional- Viewtaken on line 99, Fig, 11 and shows a modifiedform,

of pulley embodying, my invention.

Fig. 10 is a sectional view of amodified form ofpulley having-widenedrim andhub j core parts, the end View" of this form of pulley being thesame asthe end view of the modified form of pulley shown. in Fig, 9; and'Fig. 11 andthe section being taken on" a line corresponding in positionto line 10-10 of'Fig. 11'.

Fig. ll is an end elevation of the modifiedforrnofpulley shown in Fig.9.v Fig; 12 is afragmentary view'pa'rtly section in which transverserivets are. not

used in the hub. core.

Referring to the accompanying drawing which shows a pulley constructedin accordance with the, present. invention. the pulley consists of asheet metal body, indicated generally. by the reference character A,

which. forms the supporting shell within andupon which thelaminatedhubcore and laminated rim are mounted, the laminated hub corev beingindicated generally vbv he reference character B and the laminated rimby. the reference character C.

Asshown inFigs. 1 to 4. the sheetmetal. body A may consistof twoidentical stamped disks .1,- the central: portionof each ofwhich isdrawn to the form ofav cup 2 within which one-halfofthe core B isadapted to fit. The flat outer portions of the disks 1 are adaptedtobesecured together. and form the. web ofthe pulley between the hub andrim. thereof,.the web thus being substantially in the central plane: ofthe pulley and normal to the axis of'the pulley. At .in-' tervals aroundthe periphery of: the. di'sk 1 integral tongues 3"are-severed-alongtheir side edges from the body. of the sheet and bent' outwardly atright angles: thereto to form supporting ledges for engaging theinnersurface: of the laminatedrim C to center and support the rim. 1

In radial alinement with the tongues 3 the fiat portions. ofthe disks 1are provided with rivet holes 4.1m receive the rivets 5 which secure:the disks I together. Adj acent the periphery of the disks and betweenthe tongues, rivet holes are provided which receive the rivets whichsecure the rim C to the body of the pulley, as will be hereinafterdescribed. 7

From the bottom of the cup 2 of each of the disks 1 there is cut apolygonal plate 7 shown in Figs. 2, 5 and 8, the plates 7 forming theend plates of the laminated core B and being adapted to fit in theopenings from which they were cut when the pulley is assembled. Byreason of the polygonal shape of the opening formed by removing theplates 7, the segmental edge portions 7 of the bottoms of the cupportions 2 of the disks remain and serve to engage the ends of the coreB to hold the same firmly against longitudinal movement with respect tothe hub portion of the body and to engage with the end plates 7 thereofto lock the core against circumferential movement. with respect to thebody. The segments 7 also serve to brace the cylindrical hub portion ofthesheet metal body and make it more'rigid.

The hub core B may be made up of disks or plates of fibrous material,such as paper, strawboard and the like, or may comprise metal plates, orboth fibrous and metal plates alternated in any desired manner. In theformation of the core, thevarious plates may be assembled, pressed andriveted to hold them in compressed condition. When fibrous platesareusech'they are preferably compressed sutliciently to substantiallyincrease their density for engagement witha shaft.

As shown in Fig. 6, the plates 8 and 9 are formed with rectangularopenings 10 regularly spaced circumferentially thereof and adapted to bealined when the disks are assembled to receive the rivets 11 which serveto permanently bind the disks together. The

end plates 7 are provided with rectangular,

angularly spaced openings 12 corresponding to the openings 10 in theplates 8.and '9. The plates 7, 8 and 9 may be provided with notches 13before the disks are assembled, so that when alined they form the keywayin the core to receive a driving key so that the pulley will rotate withthe shaft upon which it is mounted, or the keyway may cut in the coreafter assembly. After the plates 8 and Shave been assembled with the endplates 7,

the core is compressed to'the exact length desired and the rivets 11 areheaded over against the outer'faces of the plates 7 to 13 is formedready for insertion in the pulley,

each end of the core being provided with the end plates 7 fitting in theopenings in the hub portions of the disks and the disks being thensecured together by means of the rivets 5, securing the core Bpermanently in for engagement with the key when the pul ley is securedto ashaft.

The laminated rim C is secured upon the periphery of the disks 1 whichform the body of the pulleyv and is made up of a series of laminationsof fibrous material, which may comprise disks or annular laminae of anydesired length. For instance, each annular piece may be relatively shortor may 'be of a lengt-h equal to or greater than one circumferentialdimension. \Vhether short or long. they may overlap or have their endssubstantially abut each other, as desired. Or the rim may be made upfrom a single strip of fibrous material spirally wound into an annular,cylindrical form. As the rim is made up in any of the above ways, theannular laminae'may have a suitable binder, such as casein glue orsodium silicate, ap-

plied to the surface, and the assembly may be compressed to the properdensity to make a one-piece rim'unit. Rivet holes may be provided in therim unit to receive the rlvets 15.

Reinforcing annular rings 16 with the rivet holes 6 therein areprovided, and the '16 toward each otherwill compress the inner portionof the laminae .more than the outer portion, thus leaving the outerportion less dense and relatively soft. I

In the embodiment of my invention shown in Figs. 9 to 12, the metal endmembers 20 are cup-shaped and provided with outturned flanges 21 towhich the rim C is secured by any suitable means, such as rivets 22. Theannular walls 23 of the cup-shaped members length. The bottoms 24 ofthemembers 20 which form the hub 25 to receive the hub core 26.

It will be noted in this form of the-in i vention that the portions 240f the members 20 may be secured together in any suitable manner as byrivets 27, and as shown in Fig. 9 the plate 28 may be interposed betweenthe members 20 and extend outwardly to engage the rivets 22 of the rimand thus reinforce and strengthen the pulley.

When pulleys are desired with a greater 20 underlie the rim C throughouttheir width of face, the members may be spaced'as shown in Fig. 10-andriveted together with rivets 29 having shoulders 30 against which theweb portions 24=are seated, and the rivets then headed over. It isobvious, of course. that any suitable clamping means to hold the members20 rigidly and yet hold them spaced'a-part would suflice. In this formthe-plate 28 may also be employed and be disposed centrally.

The hub core 26may be of any suitable construction but is shown aspreferably laminated and comprising metal and fibrous laminae.Also,t-he*set screws17 areshown for engagement with a key adapted to bereceived in the keyway13-t0 cause the pulley to turn with the shaft towhich it is keyed.

Also, in this form of the invention it will be noted that the hub coreisdirectly riveted to the hollow'hu'b portions 25 of the metal members20 because in this form the hub or after the pressing operation, so thatthe core will be rigidly secured to the hub oasing 25.

It will thus be seen thatI have provided a pulley for power transmissionhaving a laminated hub portion which maybe readily secured to a shaft torotate therewith, and having an outer laminated rim portion forengagement with a belt or other power transmitting device, and that bothof these portions are connected bya relatively strong web portion. ThusI have produced a relatively cheap pulley of this type notihavingthe-usual cast iron or solid metal hub, and which also has a relativelylight but strong rim portion having-a maximum frictional surface.

It will also' be' seen that if't-he laminated core be rrfade up of partmetal and part fibrous material alternately arranged the drilling of thecentral aperture therein may be accomplished in relatively much quickertime.

VJhile I have shown a laminated rim and prefer such a rim, it is ofcourse obvious that the construction of my pulley lends itself easily tothe use of any rim which can be made if desired of various non-laminatedmaterials, such as paper pulp and the like, and may be molded in theshape of a hollow, cylindrical member toform a unit which may be rivetedor otherwise secured to the end plates or to the peripheral portion ofthe web, as the case may be.

Under present conditions I prefer the construction of end members orplates shown in Figsfi9 and lO, in which these members 20 are shown asintegral and having the hub receiving portions and the web portionsreversely drawn from sheet metal disks. It is to'be understood, however,that the hub cups may beseparately made and be secured to the web in anysuitable manner and the zerijheral or rim en 'aggin oortion of the t: ism l member may be made separately and secured to the web if desired.

It will thus be seen that I have provided a relatively simpleconstruction of pulley which may be quickly and easily fabricated andassembled, and which is' inexpensive to nated rim secured to theperipheral portion of the web.

2. A pulley comprising a body having a hollow cup-shaped hub portion andweb portion encircling the hollow hub portion, a laminated core mountedwithin the hollow hub portion of the bodv, and a laminated rim securedto the peripheral portion cf the w'eb,the laminae of both the core andrim being disposed at an angle to the axis of the pulley.

3. A pulley comprising sheet metal body formed of a pair of disks havingflat outer portions secured together to form a central web andcentral'hub portions ,rormed to-provide cylindrical walls projectingfrom opposite sides of the web, a laminated. core fitting withinthehollow cylindrical hub portionof the body, and'a laminated rim securedupon the peripheral portions of the web.

4. A pulley comprising a body llf tVlng a hollow hub portion and a webportion encircling the hub portion. a laminated core secured within thehollow hub portion of the body, said core having a longitudinal bore toreceive a shaft and having its laminee disposed at right angles to theaxis of the pulley, and a rim secured to the periphery of the web.

5. A pulley comprising a pair of metal member-s formed with opposing hubreceiving portions. opposing web portions connected to said hub portionsand adapted to be clamped together in a fixed spaced relation, andalined, peripheral portions connected to said web portions and adaptedto receive a rim, a hub core of substantially cylindrical form securedin said hub receiving portions, an annular rim composed of librousmaterial having an outer frictional surface c nod to said peripheralportions, and a reinforcing disk carried by the hub core and extendinginto the rim and perforated to receive the securing members which securethe rim to the peripheral portions of the webs together and the hub coreto the hubs.

6. A pulley comprising a pair of metal members having opposing hubreceiving portior formed therein, opposing web portions and alined,annular, peripheral. portions adapted to receive a rim, means to holdsaid opposing web portions in fixed axial relation, a hub core mountedin said hub portions and carrying a disk, said hub core and disk beingsecured to said hub portions, and means passing through the rim andsecuring the rim to said peripheral portions of the metal members, saiddisk extending iron: the hub core into the rim and disposed to engageall of said holding and securing means, whereby the pulley is reinforcedby said disk.

7. A pulley comprising a sheet metal body form-ed of a pair of memberswith flat- Web portions secured together, said members having oppositelyextending hub portions, a laminated core fitting within the hubportions, said hub portions having integral portions at their ends toengage the ends of the core to retain the same, and a rim secured uponthe peripheries of the members.

8. A pulley comprising a pair of sheet metal stampings having opposingcup-shaped central portions and opposing fiat, Web portions encirclingthe cup-shaped portions, the cup-shaped portions having non-circularopenings in the bottoms and a laminated core within the hollow hubportion, said core having end plates adapted to fitin the openings inthe disks.

9. The process of making pulleys which comprises assembling a laminatedhub core and a laminated rim between metal end plates having portionsadapted to receive a core and rim, and pressing said end plates towardeach other to materially compress the core and rim simultaneously andpermanently securing the end plates in fixed relation.

10. The process of making pulleys which comprises assembling a laminatedrim of suitable predetermined length for a given Width of pulley facebetween metal end plates having portions adapted to receive it, pressingsaid end plates toward each other until the face has the desiredpredetermined width, and permanently securing said plates together infixed relation.

11. A pulley comprising a body formed of a pair of sheet metal memberswith Web portions secured together, said members having oppositelyextending cylindrical hub portions, a core of compressible materialcarried by the hub portions, and a rim secured upon the peripheries ofthe members.

12. A pulley comprising a sheet metal body formed of a pair of memberswith Web portions secured together, said members having oppositelyextending hub portions, a laminated core carried within and between saidoppositely extending hub portions, and a rim secured upon theperipheries of the members. i

13. A power transmitting pulley comprising a pair of opposed sheet metalmembers each formed with a cup-shaped hub portion, a web portion and aperipheral rim supporting portion, a laminated rim of fibrous materialsecured to the rim supporting portions of the sheet metal members, and apower transmitting core of compressible material mounted within andsecured between the opposed cup-shaped hub portions of the sheet metalmembers, said rim being of materially greater internal diameter than theexternal diameter of the core whereby said core directly receives andtransmits power to said web portions of the metal members.

In testimonyavhereof, I hereunto afiix my signature.

VVILLIAM T. HENSLEY

